#define hang 9
#define lie 9
#define hangs hang+2
#define lies lie+2
#define easy 10
void chu(char board[hangs][lies], int Hangs, int Lies, int ret);
void dayin(char board[hangs][lies], int Hang, int Lie);
void lei(char board[hangs][lies], int Hang, int Lie);
void paicha(char arr[hangs][lies], char brr[hangs][lies], int Hang, int Lie);